US3043983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge lamp
Assignee: GTE Sylvania Inc
•
Filing: 1960-04-06
•
Granted: 1962-07-10
•
Expires: 1980-04-06
Abstract
No abstract record available.
Inventors
- 👤 John G Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:35
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ELECTRON DISCHARGE LAMP COMPRISING A GLASS ENVELOP CONTAINING AMALGAM FORMING MATGERIALS, MERCURY VAPOR AND MEANS TO PRODUCE AN ELECTRON DISCHARGE IN SAID LAMP AND A BARRIER LAYER IN TRANSPARENT THICKNESS OF AN ALKALI-FREE LEAD-BOROSILICATE GLASS FOR INHIBITING AN ALKALI-MERCURY AMALGAM FORMATION DISPOSED UPON THE INNER SURFACE OF SAID ENVELOPE.
Claim 2
Dependent Claim
50 words
AN ELECTRON DISCHARGE LAMP COMPRISING A GLASS ENVELOP CONTAINING AMALGAM FORMING MATGERIALS, MERCURY VAPOR AND MEANS TO PRODUCE AN ELECTRON DISCHARGE IN SAID LAMP AND A BARRIER LAYER IN TRANSPARENT THICKNESS OF AN ALKALI-FREE LEAD-BOROSILICATE GLASS FOR INHIBITING AN ALKALI-MERCURY AMALGAM FORMATION DISPOSED UPON THE INNER SURFACE OF SAID ENVELOPE.
References Cited (Backward Citations)
US2182732A
Cited
US2177728A
Cited
US2295626A
Cited
US2362384A
Cited
US2643020A
Cited
US2963610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |